Underwater World - Philadelphia center offers courses through NAUI, PADI, YMCA, and TDI, along with details on dive travel. Dutch Springs Diving and Recreation Facility - Bethlehem area lake with information on rates, hours of operation, facility rules, site map and driving directions. Ultimate Scuba Adventures - Media based dive facility offering PADI and TDI instruction, equipment sales and service. Splash Water Sports Scuba and Snorkelling Center - PADI 5 star Instructor Development Center features information on instruction, travel, an online newsletter, contact details and hours of operation. Located in Pittsburgh. York Divers - PADI center, with information on classes, equipment, and trips. Blue Horizons Dive Center - Philadelphia dive center with information on PADI classes, vacation travel, local dive sites, and contact details. Downey Diving - Includes information on classes, trips, and local dive sites along with contact information. Located in the Pittsburgh area. Nittany Divers - A dive club at Penn State College lists information on courses, rentals and trips. Goin' Down Divin' - Informal group specializing in scuba diving vacations, primarily in the Caribbean area for all levels of divers. Includes details and pricing on upcoming trips and past trip reports. Located in Mount Joy.